JP2012165262A - Adjustment device and adjustment method for stereoscopic image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adjustment device which can adjust a large number of projectors in a stereoscopic image display device at high speed and also can adjust projectors to be installed in the periphery of a screen and an adjustment method therefor.SOLUTION: An adjustment device 20 comprises: positioning units 1a-1n of projector bodies; projection lens positioning units 3a-3n; a first iris member 4a; second iris members 4b-4n; video signal generation units 5a-5n which generates first adjustment patterns 11-13 for a reference projector and second adjustment patterns 14-16 for other projectors than the reference projector; a screen 80; a camera unit 7; a control unit 6 which acquires image data from the camera unit and controls the positioning units of the projector, the lens positioning units and the video signal generation units; and left and right adjustment screens 81, 82 which are used to adjust the perpendicularity of the projector bodies around the screen.

Description

  The present invention relates to an adjustment device and adjustment method for a stereoscopic image display device that displays a stereoscopic image using a plurality of projectors.

  Humans perceive a solid by synthesizing in their heads parallax images viewed with their left and right eyes. As a method for displaying a stereoscopic image, a binocular stereoscopic display method has been used for a long time. This method uses a left-eye mirror and a right-eye mirror to perceive a three-dimensional image by observing different two-dimensional images between the left and right eyes.

  However, in this binocular stereoscopic display system, not only it is necessary to wear special glasses incorporating a mirror, but also because a stereoscopic image is formed with only one set of parallax images, a human moved his head. It is impossible to perceive moving object parallax that sometimes changes the appearance of an object. Further, since the focus of the human eye is not on the object but on the plane of the two-dimensional image viewed through the mirror, fatigue occurs due to the mismatch of the focal positions.

  A multi-view stereoscopic display system has been developed as a system for solving the disadvantages of the binocular stereoscopic display system. In this method, multiple parallax images viewed from different directions are displayed simultaneously in the corresponding directions, and it is not necessary to wear special glasses, depending on the position of the observer's head. Since the visible images are switched, the moving object parallax can be perceived.

  Patent Document 1 discloses a stereoscopic image display apparatus that employs a multi-view stereoscopic display system. Many projectors, which are two-dimensional image display devices, are arranged in a horizontal direction and a vertical direction, respectively, and different parallax images generated by each projector are passed through a projection lens that is decentered by a predetermined amount with respect to the optical axis of the projector. Projected on the screen.

  In Patent Document 2, for a stereoscopic image display apparatus adopting a multi-view stereoscopic display system, the parallax image from the central projection lens and the parallax image from other lenses excluding the central projection lens are the same on the screen. The lens shift position of the projection lens so that an appropriate test pattern image can be obtained by projecting the test pattern image onto the screen through the aperture member attached to the central projector via the projection lens so as to be formed at the position. An adjustment device and an adjustment method for adjusting the above are disclosed.

JP 2007-309975 A JP 2010-237424 A

  In a stereoscopic image display device adopting a multi-view stereoscopic display system, in order to realize a high-quality stereoscopic display device, it is necessary to accurately adjust the lens shift of the projection lens and to accurately position a large number of projectors at predetermined positions. In other words, it is indispensable to install a plurality of projectors at predetermined intervals and to arrange the optical axis of the projectors exactly perpendicular to the screen. In particular, it is a problem that it takes a lot of time to install 50 or more projectors at predetermined intervals and adjust the orientation of the projectors so as to project perpendicularly to the screen. In addition, the projector installed at the center of the screen can be adjusted based on the image projected on the screen, but the projector installed at a position where the lens shift amount exceeds about 30% It was difficult to perform adjustment using the projected image.

  The present invention has been made in view of such problems, and can prepare a large number of projectors in a stereoscopic image display apparatus adopting a multi-view stereoscopic display system at a high speed and has a lens shift amount of about 30%. It is an object of the present invention to provide an adjusting device and an adjusting method for adjusting a projector installed at a position exceeding the range.

  In order to solve the above-described problems of the related art, the present invention provides a plurality of projectors (PJa to PJn) main bodies that respectively generate image light of a plurality of parallax images, and a plurality of projections disposed on the projector main bodies. An adjustment device (20) of a stereoscopic image display device including lenses (2a to 2n), a positioning device (1a to 1n) of the projector main body, and a lens positioning device (3a to 3n) of the projection lens The first iris member (4a) having a circular opening, the second iris member (4b to 4n) having an elliptical shape whose opening is vertically long, and a background at a predetermined luminance or less at the center of the image A reference projector book in the plurality of projector main bodies, wherein the luminance signal is an image signal in which the luminance is sequentially increased toward the center of the image so that the luminance becomes the highest, and the equiluminance region is a concentric image. The brightness is sequentially increased toward the center of the image so that the brightness at the center of the screen is the highest among the first adjustment patterns (11 to 13) for the projection lens disposed on the screen and the background below the predetermined brightness. The equiluminance area is a concentric equiluminance area in the periphery and becomes an ellipse that is long in the vertical direction of the screen as the brightness increases. Video signal generators (5a to 5n) for generating second adjustment patterns (14 to 16) for projection lenses of projector bodies other than the reference projector body, each consisting of an image signal having a short shape. A screen (80) for displaying the image projected from the projector, a camera device (7) for photographing the image projected on the screen, and image data from the camera device. The projector main body positioning device, the projection lens positioning device, and the video signal generating device are controlled to control the lens shift of the projection lens and the horizontal / vertical angle adjustment between the projector main body and the screen. A solid body comprising a control device (6) and right and left adjustment screens (81, 82) for adjusting the optical axis of the projector main body near both ends of the screen at right angles to the screen. Provided is an adjustment device for a display device.

  In the above configuration, the first adjustment patterns (11 to 13) include a plurality of adjustment patterns having different sizes of images other than the background, and the second adjustment patterns (14 to 16). ) Preferably includes a plurality of adjustment patterns having different sizes of images other than the background.

  Furthermore, a stereoscopic image display device including a plurality of projectors (PJa to PJn) main bodies that respectively generate a plurality of parallax image light beams and a plurality of projection lenses (2a to 2n) disposed in the projector main bodies. An adjustment method using the first iris (4a) having a circular opening and an adjustment pattern generated from the video signal generation device, wherein the image is centered in a background of a predetermined luminance or less. The first adjustment patterns (11 to 13) including image signals in which equiluminance areas are concentric images are sequentially increased toward the center of the image so that the luminance of the image becomes the highest. A lens shift of a projection lens arranged in a reference projector among a plurality of projector bodies is executed, and water between the reference projector and the screen is used using a third adjustment pattern. The second iris (4b to 4n), which performs vertical angle adjustment and has an elliptical shape whose opening is long vertically, is an adjustment pattern generated from the video signal generation device, and has a predetermined luminance In the following background, an image signal in which the luminance is sequentially increased toward the center of the image so that the luminance at the center of the image becomes the highest, and the equiluminance region is a concentric equiluminance region in the periphery and the luminance is Using the second adjustment pattern (14 to 16) composed of an image signal that becomes an ellipse that is long in the vertical direction of the screen as the height increases, and that has the highest luminance and has a shape that has the longest vertical and short left and right. Projector body other than the reference projector is executed using a third adjustment pattern by performing lens shift of a projection lens disposed in a projector body other than the projector body. The left and right adjustment screens (81, 82) are used to adjust the angle in the horizontal and vertical directions with the screen and to adjust the optical axis of the projector main body near both ends of the screen perpendicularly to the screen. And providing a method for adjusting a stereoscopic display device.

  In the above method, the first adjustment patterns (11 to 13) include a plurality of adjustment patterns having different sizes of images other than the background, and the second adjustment patterns (14 to 16). ) Preferably includes a plurality of adjustment patterns having different sizes of images other than the background.

  According to the adjustment apparatus and adjustment method for a stereoscopic image display apparatus of the present invention, a large number of projectors in a stereoscopic image display apparatus employing a multi-view stereoscopic display system can be prepared at high speed, and the lens shift amount is about 30. It is possible to adjust the projector installed at a position exceeding%.

1 is a configuration block diagram of a stereoscopic image display device according to a first embodiment. It is a projector arrangement | positioning figure of the stereo image display apparatus which concerns on 1st Embodiment. It is a figure which shows the 1st pattern image for adjustment used for adjustment of the projector (PJ1) used as the reference | standard in the three-dimensional image display apparatus which concerns on 1st Embodiment. It is a figure which shows the 2nd pattern image for adjustment used for adjustment of projectors other than the projector (PJ1) used as the reference | standard in the three-dimensional image display apparatus which concerns on 1st Embodiment. It is a figure which shows the 3rd pattern image for adjustment in 1st Embodiment. It is a figure which shows the shape of the lens iris member of the projector (PJ1) used as a reference | standard. It is a figure which shows the shape of the lens iris member of projectors other than the projector (PJ1) used as a reference | standard. It is a block diagram of a configuration of an adjustment device of a stereoscopic image display device according to a second embodiment. FIG. 10 is a layout diagram of a screen, an adjustment screen, and a projector in an adjustment device of a stereoscopic image display device according to a second embodiment. It is a figure for demonstrating the adjustment using the adjustment screen.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

<First Embodiment>
FIG. 1 is a configuration block diagram of a stereoscopic image display apparatus according to the first embodiment. FIG. 2 is a projector layout diagram of the stereoscopic image display apparatus according to the first embodiment. FIG. 3 is a diagram showing a first adjustment pattern image used for adjustment of the projector (PJ1) serving as a reference in the stereoscopic image display apparatus according to the first embodiment. FIG. 4 is a diagram illustrating a second adjustment pattern image used for adjustment of a projector other than the projector (PJ1) serving as a reference in the stereoscopic image display apparatus according to the first embodiment. FIG. 5 shows a third adjustment pattern image in the first embodiment. FIG. 6 is a diagram showing a lens iris member of a projector (PJ1) serving as a reference. FIG. 7 is a diagram showing lens iris members of projectors other than the reference projector (PJ1).

  The stereoscopic image display device projects a plurality of parallax images that are arranged in the parallax direction and obtained by photographing the object from different directions of the parallax direction onto the screen. The stereoscopic image display apparatus mainly includes a plurality of projectors PJa to PJn and a screen 80 that displays a stereoscopic image. The adjusting device 20 is a device that automatically adjusts the positions of the projectors PJa to PJn and the position of the projection lens. The adjusting device 20 is a projector positioning device, a lens positioning device, iris members 4a to 4n mounted in front of the projection lenses of the projectors PJa to PJn, and a single photographing device for photographing an image projected on the screen 80. And a control device 6 that controls the projectors PJa to PJn having the projection lens and the camera device 7 to adjust the positions of the projectors PJa to PJn and the position of the projection lens.

  Usually, the term “projector” includes a projection lens. Therefore, in this application, “projector” refers to a state including a projection lens, and “projector body” refers to a portion of the projector excluding the projection lens.

  The control device 6 drives the projector main bodies PJa to PJn, and also moves the projector positioning devices 1a to 1n for positioning the projector main bodies PJa to PJn and the projection lens in a plane orthogonal to the optical axis of the projector main bodies PJa to PJn. The positioning devices 3a to 3n are controlled. In the present embodiment, the control device 6 directly controls the positioning devices 1a to 1n and the lens positioning devices 3a to 3n of the projector main body. However, the control device 6 may indirectly control them via the projector main bodies PJa to PJn. Good. Further, the control device 6 controls the video signal generation devices 5a to 5n to generate a predetermined adjustment pattern. Further, the apertures of the iris members 4a to 4n mounted in front of the projection lens are controlled. The control device 6 acquires an adjustment pattern image photographed by the camera device 7 and performs various controls described later based on the acquired adjustment pattern image.

  FIG. 2 shows the arrangement of projectors, taking as an example the case where the number of projectors is 201. As shown in FIG. 2, projector bodies PJ1 to PJ201, which are a large number of two-dimensional image display devices, are respectively arranged in a horizontal direction that is a horizontal direction (x-axis direction) and a vertical direction that is a vertical direction (y-axis direction). The different parallax images generated by the projector main bodies PJ1 to PJ201 are projected onto the screen 6 via a projection lens that is decentered by a predetermined amount with respect to the optical axis of the projector main bodies PJ2 to PJ201 excluding the central projector PJ1. Has been. Further, the projector main bodies, for example, PJ2, PJ3, and PJ4 arranged in the y-axis direction are arranged at a predetermined position with respect to the x-axis.

  Next, a method for adjusting the projector main body and its projection lens will be described. First, the reference projector is adjusted. First, adjustment is performed so that the lens shift is zero. In other words, adjustment is performed so that the image data at the center of the display element passes through the center of the projection lens. Hereinafter, the adjustment of the installation position of the projector main body (PJ1) serving as a reference will be specifically described. The control device 6 issues a command to the video signal generation devices 5a to 5n so as to output all black signals to all the projector main bodies PJ1 to PJn. Next, a command is issued to the video signal generation device 5a so as to output a signal of the pattern 11 that is an adjustment pattern. The adjustment patterns (patterns 11 to 13) shown in FIG. 3 have a black background (or low luminance), and the luminance continuously increases toward the center of the screen. The equiluminance region of the adjustment pattern is substantially concentric. Further, the pattern 11, the pattern 12, and the pattern 13 are different in the size of the video other than the background. The size of the image other than the background is the largest in the pattern 11, the pattern 12 is smaller than the pattern 11, and the pattern 13 is the smallest. Using the adjustment pattern with the brightest brightness at the center of the screen and continuously changing brightness means that the center direction can be determined immediately by determining the brightness distribution of the screen with the camera. The effect of shortening the adjustment time can be obtained.

  The projection lens of the reference projector (PJ1) is provided with a lens iris member 4a having the shape shown in FIG. The iris member 4a is composed of a wing-like member 36 that can be driven by a motor. When adjusting the position of the projection lens, the aperture 34 of the iris member 4a is in a small circular state so as to transmit only the light beam at the center of the lens (FIG. 6B). The opening 34 of the iris member 4a is in a state of being largely opened so as to transmit all the light rays from (FIG. 6C). First, the aperture of the lens iris of the projection lens of the reference projector (PJ1) is set to be circular. The reason why the circular opening is set is that if only the light at the center of the optical axis is observed, it becomes sensitive to the shift, so that the adjustment accuracy is improved.

  The control device 6 shoots a video projected on the screen to the camera device 7 and issues a command so as to transfer the image data. The control device 6 analyzes the brightness of the center of the image with respect to the input image data. In the projector, the lens shift in the vertical and horizontal directions is performed by a motor constituting the lens positioning device 1 a and is controlled by the control device 6. When the center portion of the image is not brightest, the control device 6 issues a lens shift command to the lens positioning device 3a to perform lens shift in the vertical and horizontal directions. Then, the lens position is adjusted so that the center of the image is brightest. Specifically, after issuing a lens shift command, image data is input again from the camera device 7 and the same analysis is performed. This adjustment is repeated until the center of the image is brightest.

  If it is confirmed that the center of the image is brightest, a command is issued to output the adjustment pattern 12 to the video signal generation device 5a. Similarly, a lens shift command is issued to the lens positioning device 3a so that the center of the image is brightest. Next, when the adjustment pattern 13 is projected and the adjustment pattern 13 is projected, the same adjustment is performed. By performing this adjustment, the lens shift of the projector (PJ1) can be adjusted to zero.

  In the above manner, the adjustment to make the lens shift zero, that is, the adjustment that the image data at the center of the display element passes through the center of the projection lens is executed.

  Next, the second adjustment of the reference projector will be described. The second adjustment is an adjustment that causes the projector serving as a reference to be arranged perpendicular to the surface of the screen. That is, it is an adjustment that detects whether or not the projector (PJ1) main body has an angle shift (is exactly perpendicular to the screen) and makes the projector main body perpendicular to the screen.

  The control device 6 releases the iris of the projection lens of the reference projector (PJ1), and issues a command to the video signal generation device 5a so as to output the signal of the pattern 17 that is the third adjustment pattern. The third adjustment pattern is a cross hatch. The cross hatch is a lattice signal, and in the present application, the number of lattices is not particularly limited. The control device 6 inputs an image projected on the screen by the camera device 7. The control device 6 analyzes whether the center of the cross hatch projected on the screen is projected on the center of the screen. If it is not projected on the center of the screen, the control device 6 issues a command to the left and right movement motor and the vertical movement motor that are the projector positioning device 1a. The left / right moving motor and the up / down moving motor are motors for moving the projector body, and are also controlled by the control device 6.

That is, when the adjustment pattern 7 (cross hatch) which is the third adjustment pattern shown in FIG. 5 is projected, among the 16 rectangles of the cross hatch, if the size of the rectangle in the left-right direction is different, It is determined that the projector (PJ1) main body is tilted in the left-right direction. Further, if the sizes of the 16 rectangles in the vertical direction are different, it is determined that the projector (PJ1) main body is inclined in the vertical direction. In such a case, the control device 6 adjusts the angular deviation of the projector body using the left and right movement motors and the vertical movement motors constituting the projector positioning device 1a.
Through the above adjustment, the projector main body (PJ1) can be installed at a position where the offset of the lens shift is zero and the light beam output from the projector is perpendicular to the screen. In other words, adjustment is performed by moving both the lens and the projector body.

  Next, projectors other than the reference projector body (PJ1) adjust the installation position by the following procedure / method. First, adjustment is performed so that the lens shift of the projection lens is zero. In other words, adjustment is performed so that the image data at the center of the display element passes through the center of the projection lens. Hereinafter, adjustment of the installation positions of projectors other than the reference projector main body (PJ1) will be specifically described. Hereinafter, it is assumed that the projector body (PJk) and the associated projection lens are adjusted.

  The control device 6 issues a command to the video signal generation devices 5a to 5n so as to output all black to all the projector bodies (PJ1 to PJ201). Next, a command is issued to the video signal generation device 5k so as to output the adjustment pattern 14 shown in FIG. 4 to the projector main body (PJk).

  The adjustment patterns 14 to 16 shown in FIG. 4 have a black background or low luminance (in other words, a background having a predetermined luminance or less), and the luminance continuously increases toward the center of the screen. The equiluminance regions of the adjustment patterns 14 to 16 are concentric in regions where the luminance is low, but as the luminance increases, they become an ellipse that is long in the vertical direction of the screen. In the region where the luminance is highest, the isoluminance region is The top and bottom are longest and the left and right are short. Further, the patterns 14, 15 and 16 have different sizes of images other than the background. The size of the image other than the background is the largest in the pattern 14, the pattern 15 is smaller than the pattern 14, and the pattern 16 is the smallest.

  Using the adjustment pattern with the brightest brightness at the center of the image and continuously changing the brightness means that the center direction is immediately determined by determining the brightness distribution when the brightness of the screen is photographed by the camera. Since the judgment can be made, the adjustment time can be shortened.

  In a stereoscopic display device adopting a multi-view stereoscopic display system, a plurality of parallaxes are provided in the horizontal direction, but no parallax exists in the vertical direction. Due to this characteristic, there is a demand to match the pitch (installation interval) very accurately in the left-right direction, which is the horizontal direction in which a plurality of parallaxes are provided. Therefore, it is desirable that the left and right direction of the second adjustment pattern has a shape equivalent to the first adjustment pattern used for the reference projector. On the other hand, a projector that does not have parallax and cannot be placed in the center in the vertical direction has a screen so that a desired image can be projected on the screen even if it is shifted in the vertical direction during adjustment so that the adjustment speed can be increased. An elliptical pattern that is long in the vertical direction is used.

  Lenses of projector main bodies (PJ2 to PJ201) other than the reference projector are provided with lens iris members 4b to 4n having the shape shown in FIG. The iris members 4b to 4n are configured by wing-like members 36 that can be driven by a motor. When adjusting the position of the projection lens, the apertures 34 of the iris members 4b to 4n are in a small oval state so as to transmit only the light beam at the center of the lens (FIG. 7B), and when displaying a stereoscopic image. The apertures of the iris members 4b to 4n are largely opened so as to transmit all the light rays from the display element (FIG. 7C). First, the aperture of the lens iris of the projector main body (PJ2 to PJ201) other than the reference projector main body (PJ1) is set to be an ellipse. Unlike 4a, the iris shapes 4b to 4n are set to have an opening shape that is long in the vertical direction. The reason why the opening shape is long in the vertical direction is the same as described above.

The control device 6 shoots a video projected on the screen to the camera device 7 and issues a command so as to transfer the image data.
The control device 6 analyzes the input image data to determine whether the center of the image is brightest. If the center of the image is not brightest, the lens shift in the vertical and horizontal directions is performed, and the projection lens of the projector main body (PJk) is adjusted so that the center of the image is brightest. The lens shift in the vertical and horizontal directions is performed by a motor which is the lens positioning device 3k, and is controlled by the control device 6. After issuing the lens shift command, the image data is input again from the camera device 7 and the same analysis is performed.

  When it is confirmed that the center of the image is brightest, a command is issued to output the adjustment pattern 15 to the video signal generation device. Similarly, a lens shift command is issued to the lens positioning device 3k so that the center of the image is brightest. Next, when the adjustment pattern 16 is projected and the adjustment pattern 16 is projected, the same adjustment is performed. With the above adjustment, the image data at the center of the display element is adjusted so as to pass through the center of the projection lens.

  Next, the second adjustment of projectors other than the reference projector will be described. The second adjustment is an adjustment that causes the projector body other than the reference projector to be arranged perpendicular to the screen.

  The plurality of projectors are installed at equal intervals as shown in FIG. For example, PJ1 and PJ8, and PJ1 and PJ108 are shifted by 32 mm in the x-axis direction. In order to precisely align the projector so that the optical axis of the projector and the screen are perpendicular to each other, adjustment is performed using an adjustment pattern 17 (cross hatch signal) that is a third adjustment pattern. Note that when determining whether the optical axis of the projector main body is installed perpendicular to the screen, lens shift is not performed.

  Whether or not there is an angle shift of the projector body (PJk) (whether the projector body (PJk) is accurately perpendicular to the screen) is detected as follows. That is, when the adjustment pattern 17 (cross hatch signal) shown in FIG. 5 is projected, the projector body (PJk) is moved to the left and right if the size of the left and right rectangles is different among the 16 rectangles of the cross hatch. It is judged that it is leaning in the direction. Further, if the sizes of the 16 rectangles in the vertical direction are different, it is determined that the projector body (PJk) is inclined in the vertical direction. In such a case, the angle shift of the projector main body (PJk) is adjusted by the left and right movement motor and the vertical movement motor constituting the projector positioning device 1k.

  As described above, in the first embodiment, the projector positioning device 1a controls the vertical / horizontal lens shift of each projector main body (PJ1 to PJ201) and the vertical / left / right movement of each projector main body in the stereoscopic image display apparatus. ˜1n motor drive point, two types of iris members with different shapes for position adjustment are prepared, the iris to be mounted is different depending on the projection lens of the projector, and seven types of adjustment patterns are prepared and used by the projector Different adjustment patterns are used, and even in the same projector, adjustment patterns are changed to improve adjustment accuracy. As a result, the accuracy of the adjustment of the projector is improved and the automation of the adjustment can be realized.

<Second Embodiment>
FIG. 8 is a configuration block diagram of the adjustment device of the stereoscopic image display device according to the second embodiment. FIG. 9 is a layout diagram of a screen, an adjustment screen, and a projector in the adjustment device of the stereoscopic image display device according to the second embodiment. The adjustment device of the stereoscopic image display device according to the second embodiment of the present invention is the same as the case of the first embodiment except that an adjustment screen is added. That is, the projector main body (PJ1 to PJ201), the video signal generation devices (5a to 5n), the control device 6, the camera device 7, the screen 80, the left (L) adjustment screen 81, and the right (R) adjustment. The screen 82 provides a stereoscopic image display device and an adjustment device having an adjustment function.

  In the configuration block diagram of the adjustment device of the stereoscopic image display device according to the first embodiment shown in FIG. 8, a left (L) adjustment screen 81 and a right (R) adjustment screen 82 are added to FIG. Yes. In the projector layout diagram of the stereoscopic image display apparatus according to the second embodiment shown in FIG. 9, the left (L) adjustment screen 81 and the right (R) adjustment screen 82 with respect to the screen 80 are the same as in FIG. Have been added.

  About another structure, it is the same as the case of 1st Embodiment. That is, the adjustment pattern images shown in FIGS. 3, 4, and 5, and the lens iris member shown in FIGS. 6 and 7 are the same in the second embodiment.

  In a stereoscopic image display device adopting a multi-view stereoscopic display system, when the adjustment is finished and a stereoscopic image is displayed, the images from all the projectors are projected onto the same screen 80. Each is shifted by a predetermined shift amount. On the other hand, the first adjustment that makes the lens shift zero, and the second adjustment that causes the projector to be arranged perpendicular to the center of the screen, make adjustment with the lens shift zero.

  Here, the projector installed at the center of the screen can be adjusted based on the image projected on the screen, but is installed at a position where the lens shift amount during display exceeds about 30%. In a projector, it is not easy to perform adjustment using an image projected on a screen. For example, when the optical axis of the projector is at the edge of the screen 80, about half of the image projected from the projector is projected to the outside of the screen. This is because the lens shift is not performed when it is determined whether the projector main body is installed vertically with respect to the screen.

  Therefore, in the stereoscopic image display apparatus according to the second embodiment, the projector in the case where the lens shift amount is set at a position exceeding 30%, the left (L) adjustment screen 71 shown in FIG. (R) Adjustment is performed using the adjustment screen 72.

  Therefore, the adjustment of the reference projector (first adjustment that makes the lens shift zero, and second adjustment that makes the reference projector body vertically disposed at the center of the screen) Among the projector main bodies other than the projector main body (PJ1), the adjustment of the projector installed at a position where the lens shift amount is, for example, less than 30% (first, adjustment to make the lens shift zero, and second (Adjustment so that projector main bodies other than the reference projector main body are arranged perpendicularly to the screen) is adjusted in the same manner as in the first embodiment. Here, the lens shift of 0% is a projection lens shift state in which the optical axis center of the projection lens coincides with the image center, and the lens shift amount is 50%. The lens shift state in which the projection lens is shifted to the left or right so that the center of the optical axis of the lens is aligned with the left and right edges of the image (or the screen if the image is projected to full screen). means.

  Here, the adjustment peculiar to the second embodiment will be specifically described taking the projector main body (PJ101) as an example.

  First, adjustment is performed so that the lens shift is zero. The control device 6 issues a command to output all black to all the video signal generation devices (5a to 5n). Next, a command is issued to output the adjustment pattern 14 to the video signal generation device 5k connected to the projector (PJ101). The lens of the projector main body (PJ101) is provided with a lens iris member shown in FIG.

  The control device 6 shoots a video projected on the screen to the camera device 7 and issues a command so as to transfer the image data. The control device 6 performs an analysis of “whether the center of the image is brightest” with respect to the input image data. If the center of the image is not brightest, the lens is shifted up and down and left and right to adjust the center of the image to be brightest. After issuing the lens shift command, the image data is input again from the camera device 7 and the same analysis is performed.

When it is confirmed that the center of the image is brightest, a command is issued to output the adjustment pattern 15 to the video signal generation device 5n. Similarly, a lens shift command is issued to the lens positioning device so that the center of the image is brightest.
Similarly, the same adjustment is performed when the adjustment pattern 16 is projected. With the above adjustment, the lens shift of the projection lens shift of the projector main body (PJ101) can be adjusted to zero.

  Next, adjustment is performed so that the projector main body (PJ101) is arranged perpendicular to the screen. First, the opening of the iris 4k of the projection lens is opened. Next, the control device 6 issues a command to output the adjustment pattern 17 (cross hatch) to the video signal generation device 5k. If the left and right pattern lengths at the center of the projected cross hatch are made equal, the optical axis of the projector main body (PJ101) is adjusted to be perpendicular to the screen.

  FIG. 10 is a diagram for explaining the adjustment using the adjustment screen 82. Assume that the projector main body (PJ101) has its optical axis installed at the right end of the screen 80. It is assumed that the left end of the projection is at the center (C) of the screen 80. That is, as shown in FIG. 10, when the right end of the image of the projector main body (PJ101) is projected at the position of the screen width L from the center (C) of the screen, the projector main body (PJ101) is perpendicular to the screen. It becomes. Therefore, information on the right end of the cross hatch projected on the adjustment screen is projected at the position indicated by the adjustment point in FIG. 10 so that the optical axis of the projector main body (PJ101) is installed perpendicular to the screen. As described above, the positioning device (specifically, the horizontal movement motor) of the projector main body (PJ101) is driven. Specifically, assuming that the adjustment screen is located at a position symmetrical to the adjustment screen 82 with respect to the optical axis of the PJ 101, the intersection P between the light beam directed to the center of the screen and the virtual screen is a virtual adjustment point and is symmetric with it. Adjust so that the adjustment point comes to T, which is the correct position.

  The left (L) adjustment screen 71 and the right (R) adjustment screen 72 are placed at predetermined positions at the time of adjustment, and after adjustment, for example, they may be wound up and not at the predetermined positions. . Also, the left (L) adjustment screen 71 and the right (R) adjustment screen 72 are placed at predetermined positions at the time of adjustment, and may be removed after adjustment.

  With the above adjustment, the projector (PJ101 or PJ201) installed near the edge of the screen can be installed so that the offset of the lens shift is zero and the optical axis of the projector is perpendicular to the screen.

  As described above, in the second embodiment, in the stereoscopic display apparatus using about 200 projectors, the left (L) adjustment is performed when adjusting the projectors near the screen edge (for example, PJ61 to PJ101 and PJ161 to PJ201). By using the screen 81 and the right (R) adjustment screen 82, high-precision adjustment can be performed.

PJa to PJn projector,
1a to 1n projector positioning devices 2a to 2n projection lenses,
3a-3n lens positioning device,
4a to 4n iris members,
5a to 5n video signal generating device,
6 Control device,
7 Camera device,
11, 12, 13 First adjustment pattern,
14, 15, 16 Second adjustment pattern,
17 Third adjustment pattern,
20 adjustment device,
80 screens,
81 Left (L) adjustment screen,
82 Right (R) adjustment screen

Claims (4)

An adjustment apparatus for a stereoscopic image display device, comprising: a plurality of projector bodies that respectively generate image light of a plurality of parallax images; and a plurality of projection lenses disposed in each projector body,
A positioning device for the projector body;
A lens positioning device for the projection lens;
A first iris member having a circular opening;
A second iris member whose opening is vertically long and round, and
An image signal whose equiluminance region is a concentric image in which the luminance is sequentially increased toward the center of the image so that the luminance at the center of the image is highest in a background of a predetermined luminance or less, The first adjustment pattern for the projection lens disposed in the reference projector main body in the projector main body and the background at the predetermined luminance or lower in order toward the center of the image so that the luminance at the center of the screen is the highest. An image signal with increased brightness, and the equiluminance area is a concentric equiluminance area in the periphery, and becomes longer and elliptical in the vertical direction of the screen as the brightness increases. A second adjustment pattern for generating a projection lens of a projector main body other than the reference projector main body, which is formed of an image signal having a long and short left and right shape. And equipment,
A screen for displaying the image projected from the projector;
A camera device for capturing images projected on the screen;
Image data is acquired from the camera device, the projector main body positioning device, the projection lens positioning device, and the video signal generating device are controlled, and the projection lens lens shift and the projector main body and the screen are horizontal and vertical. A control device for controlling the angle adjustment of the direction;
Left and right adjustment screens for adjusting the optical axis of the projector body near both ends of the screen at right angles to the screen;
A device for adjusting a stereoscopic display device, comprising:   The first adjustment pattern includes a plurality of adjustment patterns having different sizes of images other than the background, and the second adjustment pattern has different sizes of images other than the background. The three-dimensional image display device adjustment apparatus according to claim 1, further comprising a plurality of adjustment patterns. A method for adjusting a stereoscopic image display device, comprising: a plurality of projector bodies that respectively generate image light of a plurality of parallax images; and a plurality of projection lenses disposed in each projector body,
The first iris having a circular opening is used, and the adjustment pattern is generated from the video signal generation device so that the luminance at the center of the image is the highest in the background having a predetermined luminance or less. Projection arranged on the reference projector in the plurality of projector bodies using the first adjustment pattern comprising image signals whose equiluminance areas are concentric images, the luminance of which is sequentially increased toward the center. Perform a lens shift of the lens,
Performing a horizontal and vertical angle adjustment between the reference projector and the screen using a third adjustment pattern;
A second iris having an elliptical shape with an opening that is vertically long, and an adjustment pattern generated from the video signal generation device, wherein the luminance at the center of the image is highest in a background of a predetermined luminance or less. The image signal is such that the luminance is sequentially increased toward the center of the image so that the equiluminance region is a concentric equiluminance region in the periphery and becomes longer and elliptical in the vertical direction as the luminance increases. In the highest central region, the lens shift of the projection lens disposed in the projector main body other than the reference projector main body is also performed using the second adjustment pattern including the image signal having the shape with the longest top and bottom and the short left and right. Run,
Performing horizontal and vertical angle adjustments between the projector body other than the reference projector and the screen using the third adjustment pattern;
In order to adjust the optical axis of the projector body near both ends of the screen perpendicularly to the screen, use left and right adjustment screens;
A method for adjusting a stereoscopic display device characterized by the above.   The first adjustment pattern includes a plurality of adjustment patterns having different sizes of images other than the background, and the second adjustment pattern has different sizes of images other than the background. The method for adjusting a stereoscopic image display device according to claim 3, comprising a plurality of adjustment patterns.

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